ESP-IDF
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Outline
#include "esp_attr.h"
#include "soc/soc.h"
#include "hal/gpio_hal.h"
#include "soc/soc_caps.h"
gpio_slp_mode_cfg
gpio_hal_sleep_mode_setup_wrapper(gpio_hal_context_t *, uint32_t, void (*)(gpio_hal_context_t *, uint32_t, void *))
gpio_hal_fun_pupd_backup(gpio_hal_context_t *, uint32_t, void *)
gpio_hal_fun_pupd_restore(gpio_hal_context_t *, uint32_t, void *)
gpio_hal_sleep_pupd_config_apply(gpio_hal_context_t *, uint32_t)
gpio_hal_sleep_pupd_config_unapply(gpio_hal_context_t *, uint32_t)
Files
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SourceVuESP-IDF Framework and ExamplesESP-IDFcomponents/hal/esp32/gpio_hal_workaround.c
 
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/* * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 *//* ... */ // The HAL layer for GPIO (common part) // #include "esp_attr.h" #include "soc/soc.h" #include "hal/gpio_hal.h" #include "soc/soc_caps.h" #if CONFIG_GPIO_ESP32_SUPPORT_SWITCH_SLP_PULL typedef struct gpio_slp_mode_cfg { volatile uint16_t fun_pu[((SOC_GPIO_PIN_COUNT-1) >> 4) + 1]; volatile uint16_t fun_pd[((SOC_GPIO_PIN_COUNT-1) >> 4) + 1]; }{ ... } gpio_slp_mode_cfg_t; static void gpio_hal_sleep_mode_setup_wrapper( gpio_hal_context_t *hal, uint32_t gpio_num, void (*opt)(gpio_hal_context_t *, uint32_t, void *) ) { static DRAM_ATTR gpio_slp_mode_cfg_t gpio_cfg; if (opt) { (*opt)(hal, gpio_num, (void *)&gpio_cfg); }{...} }{ ... } /** * @brief GPIO pu/pd information backup function * @param hal gpio hal * @param gpio_num gpio num * @param args pointer for bitmap to backup GPIO pu/pd information *//* ... */ static void gpio_hal_fun_pupd_backup(gpio_hal_context_t *hal, uint32_t gpio_num, void *args) { /* On ESP32, setting SLP_PU, SLP_PD couldn`t change GPIO status * from FUN_PU, FUN_PD to SLP_PU, SLP_PD at sleep. * On the ESP32S2, it does. * The following code emulates ESP32S2`s behavior: *//* ... */ gpio_slp_mode_cfg_t *pcfg = (gpio_slp_mode_cfg_t *)args; if (gpio_ll_sleep_sel_is_enabled(hal->dev, gpio_num)) { /* Record fun_pu and fun_pd state in bitmap */ if (gpio_ll_pullup_is_enabled(hal->dev, gpio_num)) { pcfg->fun_pu[gpio_num >> 4] |= BIT(gpio_num & 0xf); }{...} else { pcfg->fun_pu[gpio_num >> 4] &= ~BIT(gpio_num & 0xf); }{...} if (gpio_ll_pulldown_is_enabled(hal->dev, gpio_num)) { pcfg->fun_pd[gpio_num >> 4] |= BIT(gpio_num & 0xf); }{...} else { pcfg->fun_pd[gpio_num >> 4] &= ~BIT(gpio_num & 0xf); }{...} if (gpio_ll_sleep_pullup_is_enabled(hal->dev, gpio_num)) { gpio_ll_pullup_en(hal->dev, gpio_num); }{...} else { gpio_ll_pullup_dis(hal->dev, gpio_num); }{...} if (gpio_ll_sleep_pulldown_is_enabled(hal->dev, gpio_num)) { gpio_ll_pulldown_en(hal->dev, gpio_num); }{...} else { gpio_ll_pulldown_dis(hal->dev, gpio_num); }{...} }{...} }{ ... } /** * @brief GPIO pu/pd information backup function * @param hal gpio hal * @param gpio_num gpio num * @param args pointer for bitmap to restore GPIO pu/pd information *//* ... */ static void gpio_hal_fun_pupd_restore(gpio_hal_context_t *hal, uint32_t gpio_num, void *args) { /* On ESP32, setting SLP_PU, SLP_PD couldn`t change GPIO status * from SLP_PU, SLP_PD to FUN_PU, FUN_PD when it wakes up. * On the ESP32S2, it does. * The following code emulates ESP32S2`s behavior: *//* ... */ gpio_slp_mode_cfg_t *pcfg = (gpio_slp_mode_cfg_t *)args; if (gpio_ll_sleep_sel_is_enabled(hal->dev, gpio_num)) { if (pcfg->fun_pu[gpio_num >> 4] & BIT(gpio_num & 0xf)) { gpio_ll_pullup_en(hal->dev, gpio_num); }{...} else { gpio_ll_pullup_dis(hal->dev, gpio_num); }{...} if (pcfg->fun_pd[gpio_num >> 4] & BIT(gpio_num & 0xf)) { gpio_ll_pulldown_en(hal->dev, gpio_num); }{...} else { gpio_ll_pulldown_dis(hal->dev, gpio_num); }{...} }{...} }{ ... } void gpio_hal_sleep_pupd_config_apply(gpio_hal_context_t *hal, uint32_t gpio_num) { gpio_hal_sleep_mode_setup_wrapper(hal, gpio_num, gpio_hal_fun_pupd_backup); }{ ... } void gpio_hal_sleep_pupd_config_unapply(gpio_hal_context_t *hal, uint32_t gpio_num) { gpio_hal_sleep_mode_setup_wrapper(hal, gpio_num, gpio_hal_fun_pupd_restore); }{ ... } #endif/* ... */
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